<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="/admin/js/jquery-2.1.4.min.js"></script>
    <script>
        $(function () {
            $.ajax({
                url:'http://www.wys.com/node/qrcodeurl',
                dataType: 'json',
                async:true,
                type:'GET',
                success:function (data) {
                    var result = data;
                    alert(result.data.url);
                }
            });
        });
    </script>
</head>
<body>
   我是9999项目
</body>
</html>